Catheys Valley, CA truck route planning & crash data
Plan safer truck routes in Catheys Valley: commercial truck and garbage truck crashes in Catheys Valley and Mariposa County, dangerous roads, seasonality and route safety data for fleets. Patterns use Mariposa County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
3 of 55 truck crashes since 2015.
Deadliest roads
How Mariposa County compares with California
Mariposa County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Mariposa County stands out
Full comparison
| Measure (2015–2025) | Mariposa County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 26.7 | 33.2 | 49.7 | 20% below the state |
| Deaths per 100 crashes | 6.0 | 3.6 | 3.4 | 1.7× the state |
| Injuries per crash | 0.50 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 6.0% | 1.6% | 2.3% | 3.7× the state |
| On snow, slush or ice | 6.0% | 0.9% | 6.2% | 6.5× the state |
| Morning rush (6–10 am) | 38.0% | 23.5% | 23.7% | 1.6× the state |
| In rain, sleet or snow | 6.0% | 6.5% | 13.8% | 8% below the state |
| Winter months (Nov–Mar) | 36.0% | 40.2% | 41.9% | 11% below the state |
| After dark | 16.0% | 29.1% | 24.8% | 45% below the state |
Mariposa County sits below California on crashes per 100k residents / yr, in rain, sleet or snow and winter months (nov–mar). Where it is higher: deaths per 100 crashes, injuries per crash and garbage-truck share.
The headline for Mariposa County: 6.0% share of truck crashes on snow, slush or ice (California: 0.9%).
Overview
Since 2015, 55 crashes involving commercial trucks have been reported in Mariposa County. They injured 29 people and killed 3.
In complete reporting years that works out to about one truck crash every 80 days.
With 0 truck crashes reported in Catheys Valley since 2015, this page uses Mariposa County numbers for its patterns and comparisons.
When crashes happen
The worst month is July with 14.5% of truck crashes; the quietest is February at 0.0%.
November through March accounts for 36.0% of truck crashes here, compared with 40.2% in California.
By time of day, 9–10 am stands out with 18.2% of truck crashes.
Road surface: 6.0% of truck crashes were on snow, slush or ice (California: 0.9%).
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Catheys Valley happened on SR-140 (2); no road leads clearly.
Garbage & waste trucks
Garbage trucks account for 3 of the truck crashes here, or 5.5%, compared with 1.6% in California.
Route planning tips for Catheys Valley fleets
- Review driver schedules for July, the month with the most truck crashes.
- 38.0% of truck crashes happen between 6 and 10 am, above California; consider earlier or later starts where possible.
- 6.0% of truck crashes were on snow, slush or ice, above California; plan winter equipment checks before the season.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Mariposa County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-140 | 2 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Mariposa County) |
|---|---|
| SR-140 | 3 |
| Rt49/255Ft S Of Stumpfield Mountain Rd | 2 |
| SR-49 | 2 |
| Bear Valley Rd/78Ft W Hunters Valley Rd | 1 |
| Greeley Hill Rd | 1 |
| Highway 140/450Ft W Martin Rd | 1 |
| Horseshoe Bend Rd/600Ft N Sr132 | 1 |
| Jerseydale Rd/.7M S Wild Dove Ln | 1 |
Catheys Valley at a glance
| Land area | 23.6 sq mi |
| Median household income (ZIP 95306) | $81,302 |
Waste facilities and haulers nearby
Historical data: truck crashes in Mariposa County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | — | — | 0.2 |
| 2000s | 5 | — | 0.1 |
| 2010s | 3 | -34% | 0.5 |
| 2020s | 5 | +52% | 0.2 |
In the 2000s about 5 truck crashes a year were reported; in the 2020s, about 5. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 0.8 a year in 2016–19 and 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Catheys Valley
How many truck crashes happen in Catheys Valley?
Mariposa County has had 55 reported truck crashes since 2015, injuring 29 people and killing 3.
Which month has the most truck crashes in Catheys Valley?
The worst month is July: 14.5% of truck crashes in Mariposa County happen then.
How many garbage truck accidents happen in Catheys Valley?
Garbage trucks were involved in 3 reported crashes in Mariposa County since 2015 (5.5% of truck crashes).
How do truck crashes in Catheys Valley compare with California?
Mariposa County records 26.7 truck crashes per 100,000 residents a year, against 33.2 across California.
What is the best way to plan truck routes in Catheys Valley?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.